linux-kernel - [047/105] HID: hid-magicmouse: Increase evdev buffer size

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Message-Id: <20110412143552.968070130@clark.kroah.org>
Date:	Tue, 12 Apr 2011 07:34:36 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Henrik Rydberg <rydberg@...omail.se>,
	Jiri Kosina <jkosina@...e.cz>,
	Chase Douglas <chase.douglas@...onical.com>
Subject: [047/105] HID: hid-magicmouse: Increase evdev buffer size

2.6.38-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Chase Douglas <chase.douglas@...onical.com>

commit cc5e0f08ca2a66fc4c6984ccff74fd529e969fac upstream.

The evdev buffer isn't big enough when you get many fingers on the
device. Bump up the buffer to a reasonable size, matching what other
multitouch devices use. Without this change, events may be discarded in
the evdev buffer before they are read.

Reported-by: Simon Budig <simon@...ig.de>
Cc: Henrik Rydberg <rydberg@...omail.se>
Cc: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Chase Douglas <chase.douglas@...onical.com>
Acked-by: Henrik Rydberg <rydberg@...omail.se>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/hid/hid-magicmouse.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -418,6 +418,8 @@ static void magicmouse_setup_input(struc
 			input_set_abs_params(input, ABS_MT_POSITION_Y, -2456,
 				2565, 4, 0);
 		}
+
+		input_set_events_per_packet(input, 60);
 	}
 
 	if (report_undeciphered) {


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